Camera Pi Does Not Working at Node Red Dashboard

I have made a simple flow from timestamp to camerapi take photo node. when i trigger the time stamp, the flow run successfully but there is no picture taken. can you guys help me how to overcme this problem? the debug message is msg.payload : string[0] " "

Welcome to the forum @Aster

Please export the nodes in your simple flow and paste the flow here. Also tell us if you have installed any extra nodes. In order to make flow usable it is necessary to surround your code with three backticks (also known as a left quote or backquote ```)

   code goes here 

See this post for more details - How to share code or flow json

Also, if you are a beginner with node-red then I recommend watching this playlist: Node-RED Essentials. The videos are done by the developers of node-red. They're nice & short and to the point. You will understand a whole lot more in about 1 hour. A small investment for a lot of gain.

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